Circuit Issues
Templates
#0010SensorDesignedv1.2

Current / power measurement 5 A, 25 V (INA219)

High-side current, bus-voltage and power monitor on I²C, built around a TI INA219 (12-bit, ±40 mV…±320 mV PGA) with a Kelvin-connected current-sense shunt in series with the load. Up to 26 V bus, ~5 A. I²C pull-ups on board, jumper options for four I²C addresses and for routing the shunt sense lines, and an optional differential input filter for noisy loads.

3D render of the 0010 Current / power measurement 5 A, 25 V (INA219) KiCad design block
3D render (KiCad 10)
3D render of the 0010 Current / power measurement 5 A, 25 V (INA219) KiCad design block
3D render, top view (KiCad 10)
Schematic of the 0010 Current / power measurement 5 A, 25 V (INA219) KiCad design block
Schematic (KiCad 10)

Key specifications

  • Bus voltage 0–26 V (INA219 limit), designed for 25 V
  • Current 5 A continuous
  • Supply 3.0–5.5 V on INA219_SUP+
  • Four selectable I²C addresses (default 0x40): up to four blocks on one bus

Design notes

  • The differential input filter is not fitted by default; fit it for noisy (PWM) loads.
Coming soon

This block is not available yet. It is released once its checks are complete. Planned price: €29.

One email when this template is released. No spam.

Planned package contents

  • KiCad 10 design block

    Schematic and PCB layout fragment; symbols and footprints embedded

  • BOM (CSV)

    Manufacturer part numbers and LCSC codes

  • Schematic PDF + README

    Interface, specs, population options and design notes

  • 3D model (STEP)

    The whole block as one STEP file for your enclosure design

  • template.yaml

    Machine-readable interface and limits

  • Licence

    Use in your own products, commercial ones included

PCB Composer · from €99

Don't want to route it yourself? We compose this block with others into one routed, rule-checked board, without you opening KiCad.

Order a board with this block

Development status

Block ID0010
Block name0010-current-power-measurement-5a-25v
Version1.2
StatusDesigned – Schematic and layout fragment done; ERC/DRC clean-up and hardware verification pending.
Open review items4 (0 blocking)
PCB layoutLayout fragment without board outline; DRC clean-up pending
FormatKiCad 10 design block (schematic + PCB)
Last change2026-11-05

Interface

Hierarchical labels the block exposes to the rest of your design.

NetDirectionDescription
INA219_SUP+Power inINA219 supply voltage (3–5.5 V)
GNDPassiveSupply ground
POWER_BUS+Power inMonitored bus positive — up to 25 V
LOAD+Power outLoad side of shunt — connects to load positive
I2C_INA219_SCLInputI2C clock
I2C_INA219_SDABidirectionalI2C data

FAQ

Which KiCad version do I need?

KiCad 10. The files are saved in the KiCad 10 format and are meant to be placed with KiCad’s Design Blocks feature (schematic block, then “Apply Design Block Layout” on the PCB).

Do I need the Circuit Issues part library?

No. Symbols are embedded in the schematic and footprints in the PCB, so the block opens on its own. Parts carry manufacturer part numbers and LCSC codes.

Is the layout production-ready?

Not yet. The PCB part is a layout fragment without a board outline and its DRC clean-up is still open. The status above shows where this block is.

Can I use the template in a commercial product?

The licence terms are published together with the first release.

Related templates

0140 ESP32-S3 Core (WROOM-2)

Free KiCad 10 design block: ESP32-S3-WROOM-2 (16 MB flash, 8 MB PSRAM) with native USB-C, ESD protection, BOOT/RESET buttons and 22 GPIOs on labels.

DRC clean

0110 Low-side Switch 5 A

KiCad 10 design block: logic-level N-MOSFET low-side switch for pumps, LED strips and solenoids, 24 V / 5 A, PWM-capable from a 3.3 V GPIO.

DRC clean

0120 MPPT Solar Charger

KiCad 10 design block: MPPT charger for a 12 V lead-acid battery (14.1 V) from a solar panel up to 28 V; status and PV-voltage outputs.

DRC clean